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Marywentabroadthreeyearsago. Shedidn’treturnhome

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問題詳情:

Marywentabroadthreeyearsago. Shedidn’treturnhome

Mary went abroad three years ago.  She didn’t return home ______this year.

   A. unless         B. until           C. when        D. since

【回答】

B

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題型:選擇題